Nathan barrett



UNITED STATES PATENT OFFICE.

NATHAN BARRETT, OF NEW YORK, N. Y.

PUMP.

Specification of Letters Patent No. 32,607, dated June 25, 1861.

a full, clear, and exact description of theV same, reference being hadto the annexedV drawings, making a part of this specifica-- tion, in which-V i Y Figure l is a vertical central section of my invention taken in the line x', 00, Fig; 2; and Fig. 2 is a plan or Vtoprview of thef same.

Similar letters of reference indicate' cor responding parts in the twfo igures.,.

The object of this invention is to obtain a pump, which in vits operation will lift only the amount of water it discharges, the

weight of the wholeicolumnof water'which is lifted in the ordinary lift pumps beingv avoided. To this end YI employ vtwo pump cylinders, which are connected Vto the ends of a walking-beam, and connect .the piston rods by suitable'gearing and levers, one cylinder beingV made to balance the other, and the whole arranged substantially as hereinafter described, whereby the desired end is .obf

' tained.-

To enable those skilled inthe art to fully understand and construct my invention Y'I will proceedv to describe it. Y Y

A represents a suitable framing, in the upper part of which a walking-beam B, is

4placed on a stationary shaft C, the beam B,

beingal-lowed to work freely` on said shaft.

The walking-beam B, is formed of two plates a, a, and they are connected at their ends by links I), to cylinders D, D, which pass down into the well or reservoir A, from which the water is to be raised. Each cylinder D, -is provided with a piston E,

rather between the plates a, a, thereof, and are allowed to work freely on their fulcra g, g. The upper ends of the levers H, H, are connected by links I, I, to a bar J, which is attached to a toothed wheel K, placed centrally on a shaft L, in the upper part of the walking-beam B.r The wheel K, gears into a. stationary wheel L, which is permanently attached to shaft C.

From the above description it will be seen Athat by vibrating or oscillating the walk- "ing-beam B, the cylinders D, will be alternately raised and lowered, and the pistons kE, will be worked up and down within the .cylinders D, D, motion being communicated to them from the walking-beam through the medium of the gearing and levers, the pistons rising as the cylinders rise and also descending with them. The water is drawn up into the cylinders D, and discharged from their upper ends by the motion 'of the pistons.V The cylinders with their respective partsf are counter-poised on the shaft of the walking-beam and therefore when the pump is atv work, the rising cylinder exceeds in -weight theYV descending one-an amount due to a column Vof water equal to the length of the 'stroke of the piston, for it will be understood that the descending cylinder contains all the water it held in ascending, with the exception of the portion discharged by the upward movement of its piston. The descending cylinder D, however, gradually increases in leverage power owing to the point of connection of the ascending cylinder with the walking-beam gradually approaching the fulcrum of the walking-beam. This increasing leverage of the descending cylinder D, greatly facilitates the operation of the pump. The friction attending the operation of the parts will not be great. The pistons E, work the same as those of ordinary lift pumps, and the levers and gearing cannot create much friction. The power for operating the pump may be applied to the walking beam B, in any suitable way.

Instead of the wheels K, L, segments may be used, as a portion only of said wheels works in contact during the oscillations of the walking-beam.

Having thus described my invention what be Operated automatically by the oscillating I claim as new and desire to secure by Letof the beam B, and all arranged to operate 10 terwhlatent st- 1 D D h d as and for the purpose set forth.

e tWo )um c inders attac e 5 to the ends lof apvvglking-beam B, counter- NATHAN BARRE FT' poised thereon, and having their piston rods Witnesses: F', connected by levers and gearing or seg- LEWIS A. TUCKER, ments in such a manner that the pistons Will M. M. LIVINGSTON. 

